کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7974937 | 1514669 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of cold deformation on the microstructure and impact toughness during the austenitizing process of 1.0C-1.5Cr bearing steel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of cold deformation on the microstructure and impact toughness during the austenitizing process of 1.0C-1.5Cr bearing steel Effect of cold deformation on the microstructure and impact toughness during the austenitizing process of 1.0C-1.5Cr bearing steel](/preview/png/7974937.png)
چکیده انگلیسی
The spheroidized 1.0C-1.5Cr bearing steel with 30% cold deformation in thickness was subjected to austenitizing treatment. Interrupted quenching was employed to study the effect of prior cold deformation on the microstructure evolution during austenitizing. The results indicate that, due to the formation of many low angle boundaries, the prior cold deformation facilitates the initial dissolution of cementite during the austenitizing and decreases the final prior austenite grain size. With the dissolution of cementite, mean diameter of cementite particles decreases first and then increases. When the volume fraction of undissolved cementite was within 3.7-4.9%, the mean diameter of cementite particles would have the smallest value of approximately 0.21 µm. After tempering at 170 °C for 2 h, the impact toughness and hardness of the experimental steels with the austenitizing temperature of 850 °C were measured. The prior cold deformation increases the impact absorbed energy by approximately 7%. The fracture surface exhibits quasi-cleavage fracture. At the austenitizing time of 30 min and 60 min, nearly no fibrous region can be observed, and fracture occurs by the nucleation of microcracks at the interfaces of martensite-cementite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 674, 30 September 2016, Pages 262-269
Journal: Materials Science and Engineering: A - Volume 674, 30 September 2016, Pages 262-269
نویسندگان
Zhen-xing Li, Chang-sheng Li, Jin-yi Ren, Bin-zhou Li, Jian Zhang, Yong-qiang Ma,